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Augmented Marauder / Water Saci multi-pronged phishing campaign targeting Latin America and Europe

Campaign
First reported
Last updated
Happening score
H score 38
1 unique sources, 2 articles

Summary

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Water Saci is actively evolving a WhatsApp Web worm in Brazil that uses HTA and PDF lures to deliver a banking trojan. The latest wave shifts from PowerShell to a Python-based propagation script that spreads through trusted contacts on WhatsApp Web, helping the campaign bypass conventional controls and increase infection rates. Trend Micro says the chain may have been ported with help from an LLM/code-translation tool. The malware uses AutoIt, executed.dat, and command-and-control domains including manoelimoveiscaioba[.]com and serverseistemasatu[.]com to support persistence, reconnaissance, and remote control.

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Timeline

  1. 01.04.2026 15:36 2 articles · 3mo ago

    Augmented Marauder / Water Saci phishing campaign targets Latin America and Europe

    Campaign Scope Update

    Augmented Marauder / Water Saci are running a multi-pronged phishing campaign against Spanish-speaking users in organizations across Latin America and Europe, using email, WhatsApp, and ClickFix paths to deliver Casbaneiro (Metamorfo) through Horabot and to harvest Outlook contacts for further phishing.

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  2. 01.04.2026 15:36 2 articles · 3mo ago

    Phishing chain uses PDF lure, HTA/VBS payloads, and AutoIt loaders

    Technical Analysis Update

    The delivery chain starts with court summons-themed phishing emails that push a password-protected PDF, a malicious link, and an automatic ZIP download before executing HTA and VBS payloads; the VBS stage performs anti-analysis checks, retrieves AutoIt-based loaders, and launches encrypted payloads that load staticdata.dll for Casbaneiro and at.dll for Horabot, including a remote PHP API at hxxps://tt.grupobedfs[.]com/.../gera_pdf.php for dynamic PDF generation.

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